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ext4: ->tmpfile() support
very similar to ext3 counterpart... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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parent
46a1c2c7ae
commit
af51a2ac36
1 changed files with 46 additions and 1 deletions
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@ -2299,6 +2299,45 @@ static int ext4_mknod(struct inode *dir, struct dentry *dentry,
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return err;
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}
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static int ext4_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
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{
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handle_t *handle;
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struct inode *inode;
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int err, retries = 0;
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dquot_initialize(dir);
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retry:
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inode = ext4_new_inode_start_handle(dir, mode,
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NULL, 0, NULL,
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EXT4_HT_DIR,
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EXT4_MAXQUOTAS_INIT_BLOCKS(dir->i_sb) +
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4 + EXT4_XATTR_TRANS_BLOCKS);
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handle = ext4_journal_current_handle();
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err = PTR_ERR(inode);
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if (!IS_ERR(inode)) {
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inode->i_op = &ext4_file_inode_operations;
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inode->i_fop = &ext4_file_operations;
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ext4_set_aops(inode);
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err = ext4_orphan_add(handle, inode);
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if (err)
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goto err_drop_inode;
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mark_inode_dirty(inode);
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d_tmpfile(dentry, inode);
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unlock_new_inode(inode);
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}
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if (handle)
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ext4_journal_stop(handle);
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if (err == -ENOSPC && ext4_should_retry_alloc(dir->i_sb, &retries))
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goto retry;
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return err;
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err_drop_inode:
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ext4_journal_stop(handle);
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unlock_new_inode(inode);
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iput(inode);
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return err;
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}
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struct ext4_dir_entry_2 *ext4_init_dot_dotdot(struct inode *inode,
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struct ext4_dir_entry_2 *de,
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int blocksize, int csum_size,
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@ -2906,7 +2945,7 @@ static int ext4_link(struct dentry *old_dentry,
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retry:
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handle = ext4_journal_start(dir, EXT4_HT_DIR,
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(EXT4_DATA_TRANS_BLOCKS(dir->i_sb) +
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EXT4_INDEX_EXTRA_TRANS_BLOCKS));
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EXT4_INDEX_EXTRA_TRANS_BLOCKS) + 1);
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if (IS_ERR(handle))
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return PTR_ERR(handle);
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@ -2920,6 +2959,11 @@ static int ext4_link(struct dentry *old_dentry,
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err = ext4_add_entry(handle, dentry, inode);
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if (!err) {
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ext4_mark_inode_dirty(handle, inode);
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/* this can happen only for tmpfile being
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* linked the first time
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*/
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if (inode->i_nlink == 1)
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ext4_orphan_del(handle, inode);
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d_instantiate(dentry, inode);
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} else {
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drop_nlink(inode);
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@ -3172,6 +3216,7 @@ const struct inode_operations ext4_dir_inode_operations = {
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.mkdir = ext4_mkdir,
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.rmdir = ext4_rmdir,
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.mknod = ext4_mknod,
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.tmpfile = ext4_tmpfile,
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.rename = ext4_rename,
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.setattr = ext4_setattr,
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.setxattr = generic_setxattr,
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